Dispose all created objects #65
Description
Reduce the memory footprint of the library by disposing all created objects.
An error 'Unable to open database' occurs in SQLite because some of command and IDataReader objects are not disposed of and therefore retained in memory until the GC runs. Further details at http://support.xamarin.com/customer/portal/articles/533851-monotouch-sqlite-insert-error---unable-to-open-the-database-file
Related to SQLite database support.